DESCRIPTION:

The Bird Technologies 4028A10M Directional Power Sensor is a precision, high-power RF measurement sensor engineered for directional forward and reflected power readings across the frequency span of 10 MHz to 15 MHz. It is part of Bird’s 4028 Series Precision RF Directional Thruline Power Sensors, a family of high-accuracy sensors designed for demanding high-power RF measurement applications with ±2 % accuracy at specified calibration frequencies and power levels and ±3 % at other frequencies/power within range. 

Intended for use with compatible multifunction meters such as the Bird 4421A Series, the 4028A10M sensor provides stable, repeatable measurement performance over a wide dynamic range. Calibration is traceable to the National Institute of Standards and Technology (NIST), ensuring confidence in measurement integrity for precision RF testing, system verification, and production environments. 

The sensor’s robust design supports high-power RF environments, with typical power handling from 1.0 kW up to 25 kW and customer-specified connector configurations required for the published accuracy to apply. It features low insertion loss, high directivity, and VSWR performance consistent with precision directional measurement needs. 

Typical Use Suitability:
Well suited for high-power RF monitoring and diagnostic applications in communications, industrial RF systems, broadcast infrastructure, and semiconductor or plasma processing environments where accurate forward and reflected power data within the 10 MHz to 15 MHz range is critical. 

Key Features

• Frequency Range: 10 MHz to 15 MHz — suited for low-VHF RF applications. 

• Power Handling: 1.0 kW to 25 kW typical, depending on connectors used. 

• Accuracy: ±2 % at calibration frequency and power levels, ±3 % elsewhere in the range. 

• Directional Sensing: Measures forward and reflected power for comprehensive system insight. 

• VSWR: Maximum ~1.05:1 (with appropriate connectors). 

• Insertion Loss: Low (typically 0.05 dB with 7-16 DIN connectors). 

• Directivity:  28 dB minimum for improved measurement clarity. 

• Impedance: 50 Ohm nominal. 

• Calibration: Traceable to NIST for confidence in long-term measurement accuracy. 

• Connector Requirements: Input and output connectors must be specified and calibrated for full accuracy. 

• Sensor Interface: Latch-n-Lock style interface for robust connection to measurement equipment.